Is decision making best when thought through entirely, or as a gut reaction? Scientists now conclude it is the latter. I wouldn’t really dispute the outcome of the study, but I wouldn’t call it a "conscious" vs. "unconscious" mode (especially the Freudian sort, repressed desire and so on). The mind is disposed a certain way as a result of past thinking and past decisions; it has a character, a habit. So when you go with your gut, you are going with your habit of mind. If that’s good, it is likely the decision will be good. My grandmother knew this, didn’t need a study to be published in Science to know which way was better.